230 
INDEX. 
Melampsalta parvula, 302. 
Members, associate, 11. 
Corresponding, 11. 
Membership of the Academy, 10. 
Metazoa, sex in, 35. 
Myxomycetes, 101. 
f^autilus ponderosus, 76. 
Needed changes in scientific methods, 17, 
Nomenclature question among the slime 
moulds, 101. 
Norris, H. W , address by, 17. 
Homologies of Oyclostome ear, 39. 
Norton, W. H., variation in the position 
of the nodes on the axial segments 
of Pygidium of a species of Encrinu- 
rus, 79. 
Nutting, 0. O., origin and significance of 
sex, 33. 
Officers of the Academy, 5. 
Origin and significance of sex, 33. 
Orthoceras fanslerensis, 77. 
Osborn, H., Observations on the Cicadidae 
of Iowa, 195. 
Note on a new species of Phloeothrips 
with description, 338. 
Report of secretary-treasurer, 13. 
Osborn, H. and Mally, O. W., biologic notes 
on certain Iowa insects, 203. 
pammel, Emma, and Sirrine, Emma, some 
anatomical studies of the leaves of 
Sporobolus and Panicum, 148. 
Pammel, L. H., notes on flora of western 
Iowa, 106. 
Pammel, L. H., and} Carver, G. W., fun- 
gus diseases of plants at Ames, Iowa, 
1895, 140. 
Pammel, L. H., and Combs, Robt., some 
notes on Chromogenic bacteria, 135. 
Panicum and Sporobolus, anatomical 
studies of the leaves of, 148. 
Panicum, 155. 
Panicum, capillare, 156. 
crus-galli, 157. 
proliferum, 156. 
Parks, county, 91. 
Phloeothrips, note on a new species of, 
with description, 338. 
Phloeothrips verbasci n sp., 328. 
Physical theories of gravitation, 47. 
President’s annual address, 17. 
Proceedings of tenth annual session, 13. 
Recent developments in the Dubuque 
lead and zinc mines, 64. 
Recent discoveries of glacial scorings in 
southeast Iowa, 68. 
Reduction of sulphuric acid by copper, 
as a function of the temperature, 37. 
Report of librarian, 14. 
Report of secretary-treasurer, 13. 
Resolutions on preservation of forests 
and lakes, 15. 
Ross, L. S., Preliminary notes on the 
Iowa Entomostraca, 170. 
Secretary-treasurer, report of, 13. 
iSalix amygdaloides, perfect flowers of, 89. 
Sericothrips? 216. 
Sericothrips? perplexa, 316. 
Sex, origin and significance of, 33. 
Shimek, B., A theory of the Loess, 83. 
Perfect flowers in salix amygdaloides 
Ands, 89. 
Sirrine, Emma, and Pammel, Emma, 
Some anatomical studies of sporo- 
bolus and Panicum, 148. 
Slate near Nashua, N. H., Area of, 66. 
Slime-moulds, Nomenclature question 
among, 101. 
Sphcerium sulcatum, Anatomy of, 173. 
Spores of North American ferns, study 
of, 159. 
Sporobolus and panicum, anatomical 
studies of the leaves of, 148. 
Sporobolus. 151. 
Sporobolus cryptandrus, 153. 
heterolepis, 151. 
hookerl, 153. 
vaginseflorus, 165. 
Stewart, P. 0., and Carver, G. W., Inocu- 
lation experiments with Gymnos- 
porangium macropus, 163. 
Sulphuric acid, reduction of, 37. 
Thripidae of Iowa, contributions to a 
knowledge of, 314. 
Thrips incequalis, 233. 
lactuccB, 224. 
maidis, 319. 
pallida, 326. 
variabilis, 220. 
Tibiccn rimosa, 300. 
Tilton, J. L , area of slate near Nashua, 
N. H., 66. 
Notes on the geology of the Boston 
basin, 72, 
Unit systems and dimensions, 45. 
Weaver, 0. B., comparative study of the 
spores of North American ferns, 159. 
Youtz, L. A., clays of the Indianola Brick, 
Tile and Pottery works, 40. 
Zinc mines, recent developments in lead 
and, 64. 
